Eli5 If warm water is generally better for cleaning things, including our skin, then why do we use cold water to brush our teeth?

Question

Eli5 If warm water is generally better for cleaning things, including our skin, then why do we use cold water to brush our teeth?

In: 14

Answer 1

Some houses *may* have safe hot-water supplies, but I wouldn’t risk it. It’s why in the UK, most houses still have two taps, one for hot and one for cold, to keep the cold water one safe for drinking.